I have some experience using LNē and other extreme sorts of cooling, as you all might know. These are the extreme overclock sessions I already took part in:

LN2 - Nvidia Geforce 9600GT

DICE - Nvidia Geforce 8400GS

LN2 - Nvidia Geforce 8600GT

LN2 - Nvidia Geforce 6200

LN2 - Intel C2D E8500

SS - Intel C2Q Q9300

LN2 - Intel C2D E6300

Cascade - Intel C2D E2160

DICE - Athlon64 X2 3800+

DICE - Athlon64 3000+ Venice

SS - AMD K6/2 500MHz (Single Stage harddisk mounting)

Helped in various LNē sessions with Blind and Gamer.

Took part in the 7300GT 3DMark challenge

Furthermore I recently broke a series of Belgian OC records, when benching the E8500, namely SuperPI 1M/32M and Pifast. My newest results should come online pretty soon (Q9300) in which my submission for the SuperPi 1M part is.

The Dry Ice cooled TTIC heatpipe cooler, did it work out well? Heatpipe coolers have a certain upper and under limit temperature wise, exceeding these limits will make the heatpipe go into error. In that case, thermal conductivity may decrease 20times, only the copper structure will conduct heat then.